Plunger-pump.



DE WITT C. KING.

PLUNGER PUMP.

APPLICATION FILED JULY 21.1913.

lutvntwl July ll, I916.

6. WM @WW 6 W6 7 e for removin DE WITT 0. KING, 015 LOS ANGELES,CALIFOIIltNIA.

PLUNGER-PUME.

trauma,

Specification of Letters Patent.

Patented ma II, rare.

flpplication flled July 21, 1913. I Serial No. 780.173.

To all whom it'may concern:

Be it known that I, Dr: Wrr'r C. KING, a citizen of the United States,residing; at the city of LOS Angeles', in the county of Les Angeles andState of California, have 1nvented new and useful Imprbvements inPlungerPumps, ofwhich the following is a specification.

My invention relates more particularly to a plunger pump for pumpingdeep oil wells. In pumping deep oil wells it 1s very deslrable that theflow of oil through the plunger shall be asfree as possible and that onthe downward movement of the plunger that it shall freelyfill with oil.When the plunger carries a packing to make the joint between it-and thepump barrel a working fit the size of the plunger must be reduced toaccommodate the rings thereby diminishing the internal diameter of theplunger.

It is the object of my invention to producea deep well pump especiallyadapted for pumping oil wells in which there shall be an increasedinternal diameter in the plunger thereby producinga maximum flow ofliquid therethrough and to provide a plunger for use with the Garbuttattachment theflow of 011 through the plunger shall not be diminished bysaid attachment.

To that end the essential feature of my invention is the construction of.a pump barrel in two sections with the lower section of a greaterdiameter than the upper-sec- Y section on the line 2- -2 of Fig. l withparts in elevation.

In the drawings 5 is the upper section of the pump barrel which I willdistinguish from the lower section by calling it the lift section. Tothe lower end of the lift section is screwed the lower section 6 of thepump barrel which I distinguish from the i the standing valve in whichupper section by calling it the filling sec-' -mounted valve 9. To thetop of the cage is,

secured the operating rod 10. In the bottom of the plunger .is screwedthe usual pierced Garbutt plug 11 through which passesthe stem 12 of theGarbutt attachment for removing the standing valve and cage 13 which issecured to the lower end of the filling section of the pump barrel inthe usual well known .manner. In the sides of the plunger above plug 11are a plurality of long narrow slots 14 which with the opening'thr'oughthe plug are of a slightly greater area than thecrossinternal area ofthe plunger above the slots. v

The lift section of the pump barrel is of a length that onthe upstrokeof the plunger the slots in the plunger do not come into I. the liftsection of the barrel and on the down stroke of the plunger the top ofthe plunger does not goquite to the bottom of the lift section. Thefilling section of the pump barrel is of a sufficiently larger diameterthan the lift section to permit enough oil to surround the plunger onits downward I stroke and enter the. slots in the sides of the lower endof the plunger which with'the opening through the Garbutt plug willfurnish oil. to freelyv fill the plunger. The

length of the sections of the pump barrel is governed by the strokedesired.

section of the barrel and the plunger I do away with all packing ringsand am able to make the opening through the plunger larger than ifpacking rings were provided.

'lBymaking the diameterof the filling section of the pump barrel largerthan the lift section and by providing slots in the lower end of theside wall of. the plunger,- the plunger freely fills and thereby a pumpof increased'capacity over one using packing rings is provided and at aless cost.

7 Having describedmy invention what '.I claim is:

.lL In a deep well pump the combination of a pum barrel, composed of alift section and a filling section, the filling section having a greaterdiameter than the lift section;'

a tubular plunger having slots in the side walls thereof near itsbottom, said plunger having a-working fit in the lift section and aclearance in the filling section; a valve v By making a working fitbetween the lift cage secured to and at the top of said plunger; a valvein said valve cage; a pierced tubular plug secured in the bottom of saidplunger below the slots therein; a standing valve secured to the bottomof the pump barrel; and a Garbutt attachment secured to said standingvalve and having the stem of said attachment passing through the plug inthe bottom of the plunger.

2. In a deep well pump the combination of a pump barrel, composed ofa'lift and a fillingsection, the .filling sectionhaving a greaterdiameter than the lift section; a tubular plunger having slots in thesidewalls thereof near its bottom, said plunger having a working fit inthe lift section and a clearance in the filling-section; a valve cagesecured to and at the top of said plunger; .a

valve in said valve cage; a pierced tubular plug secured in the bottomof said plunger have hereunto subscribed my name this 10th :0

day of July, 1913.

DE WITT C. KING.

Witnesses:

G. E. HARPHAM, FRANK WATERFIELD.

